Find the most up-to-date version of ASTM B at Engineering ASTM B_能源/化工_工程科技_专业资料。Designation: B – 07 Standard Speci?cation for Silver-Coated Soft or Annealed Copper. Buy ASTM B SPECIFICATION FOR SILVER-COATED SOFT OR ANNEALED COPPER WIRE from SAI Global.
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If there are no failures, the lot conforms to this requirement.
ASTM B298 – 12(2017)
Allow to b2298 and the precipitate to settle. Tensile strength test, resistivity test, weight of coating, and dimensional measurements shall be performed to conform to the requirements specified.
See Table 1 for thickness of coatings for the various classes of coating and wire sizes. Last previous edition approved in as B — 99e1.
The silver-coated wires are classified according to the total weight of the coated wires, namely; Class A, B, C, D, and E. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use atm application. No items in cart. Make this measurement as accurately asttm possible. For information purposes the thickness of coating in microinches provided by the percentages listed above is shown in Explanatory.
Wash free of copper salts with HNO3 wash solution, followed by two to four washings with asgm wash b2988. However, any individual production unit, the specimen asmt which failed the weight criteria, shall be rejected. Lower the wire into the beaker until the liquid level is exactly at the crayon mark. The elongation of wire whose nominal 2b98 is 0. For continuity of coating determinations, the sample shall consist of eight production units.
If there are failures, but the number of these do not exceed the allowable defect number, c2 Table 2for the respective number of units in the sample, a second sample equal to n2 shall be sstm and the total defects of the n plus n2 units shall not exceed the allowable defect number, c2.
It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. Therefore, the requirement that the solution be tested by observing its blackening effect on a bright copper wire is signi? The anode efficiency is further maintained by providing agitation of qstm solution in the test cell. Multiply the counter readings by the factors corresponding to the size of the wire tested as listed in Table X1.
A portion of the test solution used for testing samples shall not be considered to be exhausted until it fails to blacken a piece of clean copper as described Explanatory Note 9: B2998 book title Enter keywords for book title search. Heat to boiling, remove from the hot plate, and add slowly, with rapid stirring, 10 mL of NaCl solution. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. No requirements for tensile strength are speci?
ASTM B – 12 Standard Specification for Silver-Coated Soft or Annealed Copper Wire
NOTE 11—Attention is called to the desirability for agreement between the manufacturer and the purchaser on package sizes that will be sufficiently large and yet not so heavy or bulky that the wire may likely be damaged in handling. If not more than two specimens fail to meet the continuity criteria, eight additional specimens from the lot shall be tested, all of which shall conform to the continuity criteria.
This standard does not purport to address all of the safety concerns, if any, associated with its use. The wire shall be protected against damage in ordinary handling and shipping. Specimens having 4 in. After daily use or after a series of tests have been completed, return the test solution to a re-use storage bottle, and rinse the beaker thoroughly with water and dry it. Essentially, therefore, the electronic thickness tester embodies a miniature reverse-current plating cell in which the piece to be tested is the anode and the cell itself is the cathode.
It does not attack the plating unless current is? The sample size and conformance criteria given for the various characteristics are applicable only to lots produced under these conditions. See Explanatory Note 2. Please login to your authorized staff account to use this feature.